Finding the Fourth Proportional to 12,493,428.98, 17,241,810.58 and 6,987,316.17
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Solution
The fourth proportional to 12,493,428.98, 17,241,810.58 and 6,987,316.17 is: 9,642,987.69
Step by Step Solution
- Step 1: Write the proportion equation
12,493,428.98 : 17,241,810.58 = 6,987,316.17 : x - Step 2: Convert to fraction form
12,493,428.98/17,241,810.58 = 6,987,316.17/x - Step 3: Cross multiply
12,493,428.98x = 17,241,810.58 × 6,987,316.17 - Step 4: Simplify right side
12,493,428.98x = 120,473,981,865,711.06 - Step 5: Solve for x
x = 120,473,981,865,711.06/12,493,428.98 - Step 6: Final answer
x = 9,642,987.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.